MTG Salvation

I decided to get a deck builders toolkit and a bundle to build a decent deck and I am just waiting for guilds of ravnica and I will probably get a booster box

New Zealand does have singles but not enough to build a good deck with.

I used to play the game but quit after Magic Origins. I am thinking of getting back into the game. I can't buy singles because I live in New Zealand and they do not have enough singles to make a good deck. I am thinking of buying a Sarkhan m19 planeswalker deck and a m19 core set bundle to upgrade the deck or buying a deck builders toolkit and a bundle. What should I do? I already know all the rules to the game. A bundle in NZ costs less than 10 booster packs.I already have all the land i need from previous toolkits and bundles.